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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. double det(double x1, double y1, double x2, double y2, double x3, double y3)
  5. {
  6.     return x1*(y2-y3) + x2*(y3-y1) + x3*(y1-y2);
  7. }
  8.  
  9. void czytaj_punkt(double &x, double &y)
  10. {
  11.     cout << "Podaj x: ";
  12.     cin >> x;
  13.     cout << "Podaj y: ";
  14.     cin >> y;
  15. }
  16.  
  17. bool punkt_w_odcinku(double xA, double yA, double xB, double yB, double xP, double yP)
  18. {
  19.     if(det(xA,yA,xB,yB,xP,yP) != 0)
  20.         return false;
  21.  
  22.     if(xP >= min(xA,xB) && xP <= max(xA,xB) &&
  23.        yP >= min(yA,yB) && yP <= max(yA,yB))
  24.         return true;
  25.  
  26.     return false;
  27. }
  28.  
  29. int main()
  30. {
  31.     double xP,yP;
  32.     double xA = 0, yA = 0;
  33.     double xB = 2, yB = 2;
  34.  
  35.     cout << "Podaj wspolrzedne punktu P:\n";
  36.     czytaj_punkt(xP,yP);
  37.  
  38.     if(punkt_w_odcinku(xA,yA,xB,yB,xP,yP))
  39.         cout << "Punkt P nalezy do odcinka AB";
  40.     else
  41.         cout << "Punkt P nie nalezy do odcinka AB";
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 5316KB
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Podaj wspolrzedne punktu P:
Podaj x: Podaj y: Punkt P nie nalezy do odcinka AB
https://ideone.com/v57MXH
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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